As for the split, it’s a shame but from personal experience splits and breaks like that always come back with a vengeance and seem to produce more
These two breaks
Produced these two buds
They was the biggest on the plant.
Had another one where I split the main stem in two and it did well.
Another branch was hanging on by its last few fibres but still produced some of the biggest buds in the groom.
So don’t be too disappointed, just keep doing what your doing, marvellous